I've just walked through the door after a much needed week away ...

[Alongstretchhome]

It was a weeks holiday to get away from lots of stress. Lovely break just what I needed. But .. I walked through the door, exhausted, to a message from a friend asking me for (another) favour. This friend knew I was due home this evening. I hadn't even seen my DDs before the phone is pinging for a favour. Dh moaning at me that I'm on my phone as soon as we get in (lots of messages back & forth with friend re the favour), dh then decides we're all getting a takeaway, fine with me, but I'm then being pressed to chose my dishes and make the call to the takeaway (he can't call) while I'm sorting out friend. My sister then messages me to say "I assume you are home" ie I've not heard from you that you are home OK. Cue quick message to her, who I can tell is annoyed.
All I wanted was a cup of coffee and a hot shower after a long flight.

Agreed on the responses, but it’s all coming at her and her friend/sister are the ones that tipped the balance, her people pleasing is what’s at fault here, the take away would have been completely unremarkable if not for needy friend and snarky sister.

the fact that her h needs her to place an order for the takeaway was the last straw, it’s mental load after 2 people who should have just backed off and given her space

100% @Alongstretchhome can fix this by not being anywhere near as accessible to people outside her family unit. I hope she takes this as a massive learning opportunity and shuts herself off from these hangers on and CF.

Install boundaries.
What you do is up to you, but, for example, I don't look at/answer my phone at work, or most of the weekend. The times I do are lunchtime and early evening only. After 8pm I won't.
Some of my boundaries are people related eg
One friend is always 'woe is me' texting. She does have a few minor problems but nothing desperate she can't resolve herself. My boundary with her is I NEVER reply to any text of hers that starts with her problems (mainly that her sister hasn't been in touch) or her health (she thinks is bad, but to be honest I have friends that never contact me that are in far poorer health) because that then starts a round of downward spiral texts. I do make a point if she texts something positive eg 'lovely sunny day here today' or 'Caught bus into A and having a lovely coffee in that nice café on the sea front' to reply asap, and of course if it was something awful eg recently someone tried to scam her, I'd reply or ring.

Op, when I look at threads I am 'on', I see this one. It comes up as:
"I've just walked through the door after a much needed wee.....".

Just thought I'd say, it gives me a chuckle and I hope it does you too.

Huge red flag when you said 'lots of messages pinging back and forth concerning the favour.' I'm assuming that these back and forth messages were during your holiday.

The friend clearly has no respect for your privacy, down time and much needed break. Please take note of all the other posters who talked about 'people pleasing' and 'set boundaries.'

Our modern connectivity has induced a contagion of insecurity and clinginess. These people have always been there, and social media has made these needy people even more desperate for attention. Replies, ticks and attention validate them. An accompanying sense of entitlement has burgeoned.

Before the advent of social media these pests were always around, knocking doors and phoning at inopportune times. At least when we went on holiday we could enjoy some peace. These days our devices allow them to plague us while we're supposed to be having a break. (Actually when I go on holiday I unplug completely).

This connectivity brings out the worst in these pests. People who need to work on their boundaries and their 'people pleasing' skills are ready victims for this selfish behaviour.

All is not lost. Be firm and tell people you don't dance to their tune any more. They'll soon lose interest and find someone else to pester. If you lose the friend, then they didn't deserve you in the first place. All the best.