First of all, whats wrong if she is 25? YOU ARE 26!!!!! The age fits. Why would you look to go out with a girl thats more than a half a decade younger than you!?!?
About the weight, you really have to be careful because often poeple exagerate or interpret things differently.
Also, you should definitely consult your LOR before canceling a date that you already agreed upon, it’s not a simple issue….
( My sister was once scheduled to go out with a guy for a 2nd date. A day before the date my parents found out information which clearly indicated the shidduch wasn’t for my sister. They asked a Rav and he said that you cant back out on your word, and she should go out)