That doesnt sound normal tbh lmao!
Its really odd but in the same way quite amusing that shes trying to blackmail you with a pram!
Surely she should have the common sence to think "This is a gift that we've brought her for the baby, she'll probs want it at hers" (sorry for calling you her, dont knwo your real name) Blackmail is the only explantion as to why she hasnt let you take it!
I dont think she's doing it to be evil, just wants you two to be back together and for everything to be peachy again but she should know thats just not how things work sometimes!
I know buying your own is easyer said than done but if you can i'd really try and get my own
x