It turns out her boyfriend planted the signs as part of his marriage proposal.
The last sign planted had a date, time and location written on it. Firth went to investigate and found her boyfriend on one knee with an engagement ring.
He asked her to marry him, and she said yes.
Just want to send out a huge THANK YOU! to everyone for the well wishes. This has been amazing! It has been hard to keep up! haha :)—
Maryanne Firth (@mfirthTribune) June 11, 2014