How would you feel about me telling an overweight girl that she is too heavy for a trust fall?
Why would you tell her she's too heavy for a trust fall?
I like her a lot and I don't want her to get hurt falling.
Even if you are concerned about it, I think it's rude to talk about her weight. Maybe find some other way to talk her out of doing the trust fall.
I think this is the easiest way to get the point across.
It may be the quickest way to get the point across but it's also the quickest way to make her upset at you. If you like her II'm sure you wouldn't want to make her mad. Finding some other way to talk her out of it is a much better way to go.