I know its stupid to get mad at this but i dont know what to do?

hi there i am 31 weeks pregnant as of today i am due august 2nd with a girl anyways i have been looking forward for 5 weeks to go shopping with my mom and have a girls weekend with out my hubby or my son. instead of a 2nd baby shower my mom was going to spend 120.00 for the new girl to get her cloths bath stuff etc... anyways well i am was getting very excited until it all got ruiend by a very rude employee at walmart what happend was i asked her if she had any disney princcess hampers in stock i saw them at walmart and she responded you dont want your daughter to get too big of a head now do you? that ruiend my day i almost cried because now i am worried that my daughter is going to be rotten because i decorated her room in disney princcess i was really looking forward to the day but it got crushed cause of her my question is what can i do to make the most out of the rest of the day i got everything i need but now i am worried about my girl being rotten please give me advice