What explanations are there for this?!

[Spinbaby]

Woke up this morning to a missed call from my mums landline number, at 20 to 1 in the morning. Weird in itself as she never uses her house phone, only her mobile, and would normally send a text after calling, explaining the reason for the call (Eg. Don’t worry was just calling to ask bla bla bla...). There was a 3 second voicemail left of some fumbling then phone hanging up.
Asked her this morning, she said she never made the call, and was asleep by half 11.
My only explanation is that she’s sleep walked and called me? But even then, she’d have had to look up my number is her mobile then go downstairs and call from the house phone. I can’t think of any other plausible explanations though, anyone ever has this happen before?

If the landline phone was by her bed, maybe she just knocked it in her sleep and caught last number redial?

That sounds plausible to me!

No, the only landline is downstairs in the living room

I’d say it was just sleepwalking

Oh ok, fair enough I suffer from anxiety so tend to over think these things

Any cats in the house who could've walked over the handset and pressed redial - your number might be the last one called even if it was ages ago.

Sleepwalking but pressing retail/another shortcut key rather than looking up your number.

She does have a cat, he’s very old and the phone is behind the blinds on the window sill so difficult for him to get to. She also says her own number was last to be called last week when she couldn’t find her phone. Guess it’s still some kind of possibility.

My cats have 'dialled' my landline occasionally - always just a nonsense number but if the paw hand landed in the right place, they could have redialled a genuine number.