To not want to be friends with this woman

[DextersMistress]

I feel horrible just writing that
My ds has a 'best friend' in nursery. Before Christmas bf's mum gave me her number to arrange a play date over the holidays. We met at soft play and tbh it was pretty strained, the dc played happily together but we didn't really click. She didn't stay long and that was that until a few weeks ago, she invited us to her house to play. I felt on the spot a little bit as she asked in front of the dc and they were pleading so we went.
Again, we didn't have much to talk about but passed the time playing with dc. As we left, dp's said can they come to our house next time and I said yes. (Felt rude not returning the favour)
So this week they came to us, and stayed all day. I was literally cooking dinner with her watching me in the kitchen before they left. My house was trashed and I was shattered. Now I would like to leave it at that, politely decline any further meetings but I feel guilty. She texts me everyday. Says she has no other friends in the area and she's so glad she met me.
I feel awful but honestly we have nothing in common and it feels really awkward. Aibu? WWyd?

I am mindful, hence me going to her yesterday. I have spoken to the nursery manager who will keep an eye on things. I'm going to suggest she talk to them as well because they're really helpful.
I'm going to try and support her but at a bit of a distance as I don't want to give too much of myself to the situation. As awful as that might sound.

It doesn't sound awful.

you dont have to be friends, but it might be hard for anyone to "click" with her if shes been abused for so long, she probably doesnt know how to just be with someone and show her own personality. she probably doesnt even know who SHE is

I find wine helps...massively... have you had any booze when you've been together before?!

Peas - at soft play??!

Haha no, no booze. I'm not much of a drinker and to have a drink together would involve an evening, with with her dp minding their dc or me going round with him there. Can't see either of those happening tbh.