Her boosted ability of "When a Friend enters play at a Problem, you may have another character there get +2 power until the end of the turn." can be triggered off of every instance of "a Friend enters play at a Problem", regardless of whose friend it is or how many times the ability has been used that turn. Note that the controller of this mane always determines what "other character there" gets the +2 power (if any, since they don't have to use the ability).
For example, playing Close Air Support with this boosted mane could result in triggering her 7 times at once (and the resulting 7x instances of +2 until end of turn can be applied to other characters there including the other temporary Blue Pegasus tokens, as long as the +2 power from any specific token entering play isn't applied to that particular token).
So Close Air Support becomes 4 AT for 21 temporary power at as many problems as you want.