Offering to make birthday cake for someone else's child

[Opinionsprettyplease]

Hoping to get a feel for whether this is reasonable, and in what circumstances.
10yo dd's friend's mum offered (directly to dd) to make the birthday cake for her upcoming party. I'm thinking wtf but am I overreacting?
I don't like her for lots of reasons, some related, but trying to straighten my thoughts on it in isolation, if that makes any sense!
Yabu - get over it, it's just a cake
Yanbu - who does she think she is

Yeah I know, just wondering if I had lost it about the cake.

Also regularly offers DD a snuggle in her boobs as they are "so big" 🤮

And you allow your daughter anywhere near her? I'm more alarmed at your judgement now, to be honest.

I don’t think the cake scenario is the problem.

I don't see the issue with her making your daughter a cake as a present if she liked the cake

The boobs thing is much, much weirder and concerning

I'm thinking she should have made the offer to you not your DD