In 2015, Belen played in 2 LET tournaments.
In 2014, Belen played in 4 LET tournaments and secured her best finish of the season at the Volvik RAVC Australian Masters, where she came T8.
In 2013, Belen played in five LET events and made four cuts with a season-best T16 at the Volvik RACV Ladies Masters. Once again she mainly concentrated on playing in the USA.
In 2012, Belen played in just three LET events with a season-best T18.
In 2011, Belen joined the LET and played in eight tournaments on the LET. T13 at the ANZ RACV Ladies Masters and the Portugal Ladies Open. Played in 15 tournaments on the LPGA and made 8 cuts with a season-best tie for 5th at the Walmart NW Arkansas Championship presented by P&G.
In 2010, Belen made her professional debut at the US Women’s Open but missed the cut. She wanted to run pro earlier but had shoulder surgery in 2009. She received an invitation to play at the 2010 AIB Ladies Irish Open and missed the cut, then tied for 16th at the 2010 Sanya Ladies Open in China before earning a card on the LET and LPGA at Qualifying School for 2011.