Does this make any sense at all?

[targetguy1]

Hand#1945013207001199 - Pebble Beach (1 on 1) 13207 -- $0.25/$0.50 NL Hold'em -- 2009/08/02 - 06:42:39
Seat 3: sassy12u ($10.70 in chips) DEALER
Seat 8: Muts***8 ($119.25 in chips)
Muts***8: posts small blind $0.25
sassy12u: posts big blind $0.50
Dealt to sassy12u [Ad,Qd]
Muts***8: raises to $1.50
sassy12u: raises to $4
Muts***8: calls $2.50
*** FLOP *** [7h,7d,2c]
sassy12u: checks
Muts***8: checks
*** TURN *** [3h]
sassy12u: checks
Muts***8: bets $8
sassy12u: is all in 6.7000
Muts***8: returns uncalled bet $1.30
sassy12u: shows [Ad Qd]
Muts***8: shows [Kh 4h]
*** RIVER *** [4c]
***SHOW DOWN***
Muts***8: wins $20.90 with Two Pairs, Sevens and Fours

after looking at this again i am wondering to myself did she sit down with $50 to start off with and not the $10 and change to start off with cuz i find it very hard to think someone with a $100 would play you with anything less then $50. i know it doesnt matter with the outcome of the hand but i was just wondering as the amount she sat down with is foolish if its only $10 or so. also brings up a point that even if you did sit down with $50 or more the $10.....it had to be her whole roll since having $10 at this table is pointless for her and she never bought in for more. so why sit down at a cash table with your whole br anyways? why do people do this. makes no fing sence to try and double your roll in a cash game.